Shop Windows to the Universe

Poles in Space

The areas around the North and South Poles of planets, moons, and even the Sun are often interesting and unusual places. We have discovered all sorts of unique behavior at these locations, while on some planets, the characteristics of the poles are similar to those of Earth. On some planets and moons, we still don't have observations from their poles so can only make educated guesses of what we expect to find there based on our scientific understanding of the celestial body. The links below provide an overview of what we know about the polar regions of many of the major bodies in the solar system. An important concept related to the poles of the planets is the amount of tilt of a planet's rotational axis relative to the plane of the ecliptic - the orbital plane in which the planets orbit the Sun. Planets with a large tilt have stronger seasonal behavior than planets without a tilt.

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Earth and Space Science Concept of the Day

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Moho

xMoho : The boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic' discontinuity after the Croatian seismologist Andrija Moh

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Research Highlights

Scientists have been taking a close look at microbes that live in the ocean. The microbes they are studying are a type of bacteria and are very tiny. They may be small but they have a big impact on life...Read more